Operating mechanism



March 8,1927. 1,619,810

J R CAUTLEY OPERATING MECHANISM Filed Oct.1 2, 1925 INVENTOR JOHN R C'AUTLEY BY ATTORNEY ing a front wheel brake.

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FICEo ASSIGNbR Tb BENDIX BRAKE COM- IP'Y, 'OE' CHICAGO, ILLINOIS, A. CORPORATION .015 ILLINOIS- UPERATING- MECHANISM.

Application filed tltctober 12, 1925. Serial No. 62,077.

This inventionrelates to the adjustment of operating mechanism such as is used in applying brakes, and is illustrated asem: bodied. in adjustable mechanism for applylln one desirable arrangement a lever'pivoted on an operating shaft carries a gear part meshing with gear teeth carried by, and shown integral with, the shaft, and the gear part can therefore be operated to adjust the lever angularly with respect to the shaft. ,ll prefer that the gear part should have a worm thread meshing with worm teeth on the shaft.

According to an important feature of the invention, the lever ist'clampedto the shaft to preserve its adjustment, by means cooperatively engaging the adjusting means. lln one sinuplcand edficient embodiment, the gear part bridges a split in the hub of the lever, and means such as a nut, threaded on the gear part is provided to contract the hub onto the shaft.

While not necessarily limited to such use, it. will be seen that the described arrangee nient is of especial utility in adjusting front wheel brakes, where the change in the posi- 'tions of the various parts as the brake wears rangenuent, most of the parts of the brakeof the invention, combinations of parts and desirable particfollowing d bodiinent includes a dr mounted on the spindle ofa rnayhave a serious and undesirable effect on the operation of the brake. By the new aroperating connections are unaifected by the adjustment i The above and other objects and features including various novel ular constructions, will be apparent from the escri'ption of one illustrative emshown in the accompanying drawinginwhich."

ig, "1L isa vertical transverse section parts; and w Fig. 2.17s a 'sectionon the line 2-2 of Fig. 1, showing the brake-operating lever in side elevation. A f

In the arrangement; illustrated, the brake m 10 turning with the wheel the wheel being rotatably knuckle 12. Knuckle 12' is swivelled,by a king-pin or the like, to oneend of the front axle 14 which, with the. rear axle, 'supports'a chas sis frame 16 by means of springs .18. The brake'includesalso friction means acting on through one front brake and associated (not shown.

- shells 362 preferably a worm,

split in the hub by the terms of the drum,

and illustrated as internal shoes I cam 22 or some equivalent device.

Cam 22 'is'keyed or fixed on a hollow shaft 24: having a cylindrical cross bore in its end for outwardly-cylindrical connectors 26, between which a pin 28 swivels the flattened end of the brake-operating shaft 30. Connectors 26 and pin 28 constitute a universal joint substantially in the swivell ing axis of the wheel. At its inner end, shaft 30 is slidably receivedin a sleeve 32 carried by inner and outer semispherical.

and 36 slidably engag ng a spherical body portion of a support 38 bolted to the chassis frame 16..

Shaft 30 is rocked to apply the brake by a lever' 40 operated from the pedal or its equivalent by a brake rod or the like 4:2, Accordin to an important feature of the invention, lever 40 carries a gear part 44L,

carried by shaft 30, and shown as worm gear teeth 46 formed integrally on a section. of the shaft and meshing with the wormthread onpart at with a suitable wrench, lever 40 can be adjusted angularly of shaft 30.

I prefer thatlever {i0 should have a split hub tS embracing the gear section t6, the being bridged by part at. 'lhis makes it possible to contract the hub to clamp the lever on the shaft to preserve the adjustment, by means such as a nut 50 threaded on the worm thread of part at, When so clamped, the friction between the hub and shaft is so great that there is practically of the worm,

While one illustrative embodiment of the invention has been described in detail, it is not my intention to limit its scope to that particular embodiment, or otherwise than the appended claims.

llclaim: o l. @perating mechanism comprising, in combination, a shaft having a part formed with gear teeth,;a hub encircling said part and having a lever extending rigidlytherefrom on oneside and split on the side oppo-= site the lever, and an. adjusting member bridging thesplit in the hub and formed to meshvwith saidgear teeth and operableto adjust the lever andshaft angularly with respect to each other.

part, M. 'lhus byturning no shearing strain on the threads meshing with gear teeth till) 2. Operating mechanism comprising, in combination, a shaft having a part formed with gear teeth, a hub encircling said part and having a lever extending rigidly therefrom on one side and split on the side opposite the lever, an adjusting member bridging the split in the hub andformd to mesh with said gear teeth and operable to adjust the lever and shaft angularly with respect to each other, and means engaging the adjusting member and operable to contract the split hub to clamp the lever on the shaft in adjusted position. v

3. Operating mechanism comprising, in combination, a shaft, a hub encircling said part and having a lever extending rigidly therefrom on one side and split on the side opposite the lever, and an adjusting member bridging the split in the hub and formed to be operatively interengaged with the shaft and operable to adjust the lever and shaft angul'arly with respect to each other.

4. Operating mechanism comprising, in combination, a shaft, a hub encircling said part and having a lever extending rigidly therefrom on one side and split on the side opposite the lever, an adjusting member bridging the splitt-in the hub and formed to be operatively in erengaged with the shaft and operable to adjust the lever and shaft angularly with respect to each other, and.

means engaging the adjusting memberand operable to contract the split hub to clamp the lever on the shaft in adjusted position.'

5. Operating mechanism comprising, in combination, a shaft having a partformed with worm teeth, a hub encircling said part and having a lever extending rigidl' therefrom on one side and split, on the si e oppo site the lever, an adjusting member carried by said hub and bridging the split in the hub and having worm gear teeth meshing with said worm teeth, and means engaging said member and. operable in cooperation therewith to contract the split hub about the shaft to clamp the lever 'to the shaft in any position of angular adjustment;

6. Operating mechanism' comprising, in combination, a shaft having a part formed with worm teeth, a hub encircling said part and having a lever extending rigidly theresite the lever, an adjusting bolt carried by said hub and bridging the split in the hub and having a thread forming worm gear teeth meshing with said worm teeth, and means engaging said member and operable in cooperation therewith to contract the split hub about the shaft to clamp the lever to the shaft in anyxposition of angular adjustment. v l v 7. Operating mechanism comprising, in combination, a shaft having 'a part formed with worm teeth, a hub encircling said part;

and' having a lever extending rigidly therefrom on one side and split on the side oppofrom on one side and split on the'side 'opposite the lever, an adjusting bolt carried by said hub and bridging the split in the hub and having a thread forming worm gear teeth meshing with said worm teeth, and a nut threaded on the end of thelbolt and operable to tighten up on the bolt to con-,

tract said split hubto clampthe lever to the shaft in any position of adjustment.

signed my name,

' JOHN R. OAUTLEY.

In testimony whereof, I have hereunto 

